Knife blade



FIG. 1 is a perspective view of the knife blade showing my new design;

FIG. 2 is a Left side view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof; and,

FIG. 5 is a fragmented enlarged view of the rear edge shown in FIG. 2.

The Right side view is a mirror image of the Left Side view shown in FIG. 2.

The broken lines shown in the drawings are for illustrative purposes only and do form no part of the claimed design. 

The ornamental design for a knife blade, as shown and described. 